Water-tube boiler.



Nnr 686,759- Patented Nov. I9, I90]. R. C. PEABODY.

WATER TUBE BOILER.

(Applicatioxi filed Mar. 13, 1901.)

2 Sheets-Sheet l.'

(" 0 Model.)

Inventor Witnesses:

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No. 685,759. Pate'nt'ed Nov. 19, I90l. I

R. c. PEABDDY.

WATER TUBE BOILER.

(Application filed Mar. 13, 1901.) (No Hodel.) 2 Shaats8heet 2.

Inventor Witnesses: M s

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llniTn STATES PATENT OFFICE.

ROYAL O. PEABODY, OF BROOKLYN, NElV YORK.

WATER-TUBE BOILER.

SPECIFICATION forming part of Letters Patent No. 686,759, dated November19, 1901.

Application filed March'lS, 1901. Serial No. 50,922. (No model.)

To ctZZ 1071,0177, it may concern:

Be it known that I, ROYAL O. PEABODY, a citizen of the United States,residing in the borough of Brooklyn, city of New York, State of NewYork, have invented a certain new and usefullmprovement in WVater-TubeBoilers, of which the following is a description.

My invention relates to various new and useful improvements inwater-tube boilers; and my objects generally are to improve and simplifythe construction of boilers of that type and to increase the efficiency.

A further and subsidiary object is to so construct a water-tube boileras to permit of its being transported in relatively small sections andquickly assembled for use or to be again easily knocked down forpurposes of transportation, thereby affording a construction of boilerwhich is especially designed for use in localities which cannot bereached by railroads and where all merchandise must be transported bypack-animals.

In order that the invention may be better understood, attention isdirected to the accompanying drawings, forminga part of thisspecification, and in which- Figure 1 is a front view of the boiler,showing the front wall of the furnace removed; Fig. 2, a section on theline2 2 of Fig. 1, and Fig. 3 a section on the line 3 3 of Fig. 2looking toward the mud-drum.

In all of the above views corresponding parts are represented by thesame numerals of reference.

1 represents a mud-drum made, preferably, of flanged sections boltedtogether, as shown, which may be of any desired length and which extendstransversely of the furnace directly behind the bridge-wall 2. Each ofthe sections of the mud-drum when the latter is made sectional is of asufficientlylight Weight to be transported by a pack-animal. Themud-drum is provided with the usual manhole 3, with a valve-inlet 4: forfeed-water, and with a blow-off pipe5 for blowing off sediment.Thegratebars 6 extend, as is common, between the bridge-wall 2 and asuitable shelf 7, secured to or embedded in the front wall 8 of thefurnace.

9 9 are two steam-drums, which are also preferably made of flangedsections bolted together, which are of any suitable length and whichextend at right angles to the m ud-dru in, being supported onchannel-irons 1O 10, carried within the front and back walls 11 and 12,respectively. For the support of these channel-irons supporting-pillars13 may be employed, embedded within the front and back Walls andsuitably supported on the bottom foundation of the boiler. Instead ofemploy-- ing two steam-drums, as shown, one only may be used, or threeor more may be employed, it being only necessary to shorten or lengthenthe mud-drum to correspond therewith. EX- tending between the mud-drum land each of the steam-drums 9 are two sets of upflowtubes 14 and 15,respectively connected at their ends to the drums in any suitable andapproved way. Extending between each steam-drum and the mud-drum is asingle set of downfiow-tubes 16, similarly connected. Mounted on thetubes 14 is a fire-brick partition 17', made of slabs laid in place orsecured together by tie-rods l8, and at the top of this partition is ashort partition 19, which deflects the products of combustion from thetubes 14 to the tubes 15, as shown by the arrows. Mounted on top of thetubes 15 is a partition 20, similarly constructed, and mounted on top ofthe tubes 16 is a partition 21, made also of fire-brick. The fire-boxmay be provided with a top 22 for deflecting the products of combustiontoward the lower end of the upflow-tubes 14; but, if desired, said topmay be dispensed with. The stack for carrying 0d the products ofcombustion may be located at any suitable point. Preferably, shown infull lines, the stack 23 is located between the partitions and 21; butit may extend vertically above the doWnfloW-tubcs 16, as shown at 24,(dotted lines,) or horizontally out from the top of said tubes, as shownat 25, (dotted lines.) Doors 26, 27, and 28 are formed in the side wallsof the furnace to permit an operator to reach the several sets of tubes,and a door 29 may be formed in the side walls to enable an operator toreach the space between the partitions 20 and 21 for removing ashes orsediment therefrom. The several sets of tubes 14, 15, and 16 arearranged, preferably, as shown in Fig. 3, so that by disconnecting anytube from the muddrum and steam-drum it may be removed witlr outinterfering with the other tubes. Thus,

as shown in Fig. 2, the tubes 14 may be arranged in six rows, therebeing sufficient space between the tubes of the first and second andfifth and sixth rows to permit the passage between them of the tubesarranged in the third and fourth rows, which latter tubes may be, asshown, arranged very closely together.

In operation the products of combustion pass from the fire-box aroundthe upflowtubes 14, down around the upfioW-tubes l5 and beneath thepartition 20, and up in contact with the doWnfloW-tubes l6,finallyemerging from the stack. In this circulation of the products ofcombustion the steam drum or drums and the mud-drum also will besubjected to the effects of the heat. Owing to the higher temperature ofwater in the tubes 14 and 15, water will circulate up through saidtubes, back through the steam-drums, and down through the doWnfloW-tubes16 to the mud-drum. The ordinary water-level is to be substantially inline with the upper end of the circulation-tubes, as shown.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, .is as follows:

1. In a water-tube boiler, the combination of a substantially horizontalsteam drum made in sections, a substantially horizontal mud-drum made insections and extending at right angles to the steam-drum, removableupflow-tubes connecting one end of the steamdrum with the mud-drum,removable downflow-tubes connecting the other end of the steam-drum withthe mud-drum,and sectional partitions adjacent to both sets of tubes fordirecting the products of combustion into direct contact therewith,substantially as and for the purposes set forth.

2. In a water-tube boiler, the combination of a mud-drn m, a steam-dru1n mounted above the same and extending at right angles therewith, twosets of upflow-tubes connecting the mud-drum with one end of thesteam-drum, doWnflow-tubes connecting the mud-drum with the other end ofthe steam-drum, a partition on top of each set of upflow-tubes, apartition on top of the downflowtubes, and a connection between thelatter partition and the adjacent partition of the uptloW-tubes, wherebya continuous fine for the products of combustion will be formed betweenthe upfloW-tubes and the adjacent set of downflowtubes above themud-drum, substantially as set forth.

- 3. In a Water-tube boiler, the combination of a sectional mud-drum, asectional steamdrum mounted above the same and extending at right anglestherewith, two sets of removable upfloW-tubes connecting the muddrumwith one end of the steam drum, removable downflowtubes connecting themuddrum with the other end of the steam-drum, a sectional partition ontop of each set of upflow-tubes, and a sectional partition on top of thedownfloW-tubes, substantially as set forth.

This specification signed and witnessed this 4th day of March, 1901.

ROYAL O. PEABODY.

Witnesses:

FRANK L. DYER, JNo. R. TAYLOR.

